external/bsd/nvi/dist/vi/v_init.c

   1 /*      $NetBSD: v_init.c,v 1.2 2013/11/22 15:52:06 christos Exp $ */
   2 /*-
   3  * Copyright (c) 1992, 1993, 1994
   4  *      The Regents of the University of California.  All rights reserved.
   5  * Copyright (c) 1992, 1993, 1994, 1995, 1996
   6  *      Keith Bostic.  All rights reserved.
   7  *
   8  * See the LICENSE file for redistribution information.
   9  */
  10
  11 #include "config.h"
  12
  13 #ifndef lint
  14 static const char sccsid[] = "Id: v_init.c,v 10.9 2001/06/25 15:19:31 skimo Exp  (Berkeley) Date: 2001/06/25 15:19:31 ";
  15 #endif /* not lint */
  16
  17 #include <sys/types.h>
  18 #include <sys/queue.h>
  19 #include <sys/time.h>
  20
  21 #include <bitstring.h>
  22 #include <errno.h>
  23 #include <limits.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27
  28 #include "../common/common.h"
  29 #include "vi.h"
  30
  31 /*
  32  * v_screen_copy --
  33  *      Copy vi screen.
  34  *
  35  * PUBLIC: int v_screen_copy __P((SCR *, SCR *));
  36  */
  37 int
  38 v_screen_copy(SCR *orig, SCR *sp)
  39 {
  40         VI_PRIVATE *ovip, *nvip;
  41
  42         /* Create the private vi structure. */
  43         CALLOC_RET(orig, nvip, VI_PRIVATE *, 1, sizeof(VI_PRIVATE));
  44         sp->vi_private = nvip;
  45
  46         /* Invalidate the line size cache. */
  47         VI_SCR_CFLUSH(nvip);
  48
  49         if (orig == NULL) {
  50                 nvip->csearchdir = CNOTSET;
  51         } else {
  52                 ovip = VIP(orig);
  53
  54                 /* User can replay the last input, but nothing else. */
  55                 if (ovip->rep_len != 0) {
  56                         MALLOC_RET(orig, nvip->rep, EVENT *, ovip->rep_len);
  57                         memmove(nvip->rep, ovip->rep, ovip->rep_len);
  58                         nvip->rep_len = ovip->rep_len;
  59                 }
  60
  61                 /* Copy the paragraph/section information. */
  62                 if (ovip->ps != NULL && (nvip->ps =
  63                     v_strdup(sp, ovip->ps, strlen(ovip->ps))) == NULL)
  64                         return (1);
  65
  66                 nvip->lastckey = ovip->lastckey;
  67                 nvip->csearchdir = ovip->csearchdir;
  68
  69                 nvip->srows = ovip->srows;
  70         }
  71         return (0);
  72 }
  73
  74 /*
  75  * v_screen_end --
  76  *      End a vi screen.
  77  *
  78  * PUBLIC: int v_screen_end __P((SCR *));
  79  */
  80 int
  81 v_screen_end(SCR *sp)
  82 {
  83         VI_PRIVATE *vip;
  84
  85         if ((vip = VIP(sp)) == NULL)
  86                 return (0);
  87         if (vip->keyw != NULL)
  88                 free(vip->keyw);
  89         if (vip->rep != NULL)
  90                 free(vip->rep);
  91         if (vip->ps != NULL)
  92                 free(vip->ps);
  93
  94         if (HMAP != NULL)
  95                 free(HMAP);
  96
  97         free(vip);
  98         sp->vi_private = NULL;
  99
 100         return (0);
 101 }
 102
 103 /*
 104  * v_optchange --
 105  *      Handle change of options for vi.
 106  *
 107  * PUBLIC: int v_optchange __P((SCR *, int, const char *, u_long *));
 108  */
 109 int
 110 v_optchange(SCR *sp, int offset, const char *str, u_long *valp)
 111 {
 112         switch (offset) {
 113         case O_PARAGRAPHS:
 114                 return (v_buildps(sp, str, O_STR(sp, O_SECTIONS)));
 115         case O_SECTIONS:
 116                 return (v_buildps(sp, O_STR(sp, O_PARAGRAPHS), str));
 117         case O_WINDOW:
 118                 return (vs_crel(sp, *valp));
 119         }
 120         return (0);
 121 }